package cn.jjzd.upload.service;

import com.github.tobato.fastdfs.domain.StorePath;
import com.github.tobato.fastdfs.service.FastFileStorageClient;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;

@Service
public class UploadService {
    private static final List<String> CONTENT_TYPES = Arrays.asList("image/gif","image/jpeg","image/png","image/jpg");

    private static final Logger LOGGER = LoggerFactory.getLogger(UploadService.class);

    @Autowired
    private FastFileStorageClient storageClient;

    /**
     *
     * @param file
     * @return
     */
    public String uploadImage(MultipartFile file) {
        //校验文件类型
        String originalFileName = file.getOriginalFilename();
        //StringUtils.substringAfterLast(originalFileName,".");
        String contentType = file.getContentType();
        if (!CONTENT_TYPES.contains(contentType)){
            LOGGER.info("文件类型不合法: {}",originalFileName);
            return null;
        }
        try {
            //校验文件内容
            BufferedImage bufferedImage = ImageIO.read(file.getInputStream());
            if(bufferedImage == null){
                LOGGER.info("文件内容不合法: {}",originalFileName);
                return null;
            }
            //保存到服务器
            //file.transferTo(new File("D:\\study\\jjzd\\images\\"+originalFileName));
            String ext = StringUtils.substringAfterLast(originalFileName,".");
            StorePath storePath = this.storageClient.uploadFile(file.getInputStream(),file
            .getSize(),ext,null);
            //返回url进行回写
            //return "http://image.jjzd.com/"+originalFileName;
            return "http://image.jjzd.com/"+storePath.getFullPath();
        }catch (IOException e){
            LOGGER.info("服务器内部错误: {}",originalFileName);
            e.printStackTrace();
        }
        return null;
    }
}
